CN1490196A - Headlight devices for vehicles and optic axis position setting method - Google Patents
Headlight devices for vehicles and optic axis position setting method Download PDFInfo
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- CN1490196A CN1490196A CNA031584926A CN03158492A CN1490196A CN 1490196 A CN1490196 A CN 1490196A CN A031584926 A CNA031584926 A CN A031584926A CN 03158492 A CN03158492 A CN 03158492A CN 1490196 A CN1490196 A CN 1490196A
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- optical axis
- deviator
- deflection
- angle
- head lamp
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
- B60Q1/08—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
- B60Q1/12—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to steering position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
- B60Q1/08—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
- B60Q1/10—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to vehicle inclination, e.g. due to load distribution
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q2200/00—Special features or arrangements of vehicle headlamps
- B60Q2200/30—Special arrangements for adjusting headlamps, e.g. means for transmitting the movements for adjusting the lamps
- B60Q2200/38—Automatic calibration of motor-driven means for adjusting headlamps, i.e. when switching on the headlamps, not during mounting at factories
Abstract
A headlamp apparatus for a vehicle includes a left-right deflecting device for deflecting an optical axis of illumination of a projector lamp in a left-and-right direction in correspondence with a steering angle of a vehicle; a vertically deflecting device for deflecting the optical axis of illumination of the projector lamp 30 in a vertical direction; and a deflection controlling device for effecting the operation of setting the optical axis by the left-right deflecting device at a time when the optical axis of illumination is in a state of being oriented in a lower direction than the horizontal direction by the vertically deflecting device. The optical axis position of the projector lamp is oriented in a lower direction than the horizontal direction by the vertically deflecting device until the optical axis position is set to a reference angular position by the left-right deflecting device.
Description
Technical field
The present invention relates to the vehicle headlamp of automobile etc., particularly relate to the vehicle headlamp apparatus and the optical axis position establishing method thereof that can be set in the optical axis of head lamp accurately the reference angle position in the front lamp device of the light distribution control that possesses corresponding walk and the direction of illumination of head lamp and range of exposures are followed the tracks of change, for example ecad Lighting System (claiming AFS (Adaptive Front-Lighting System comformability headlamp lighting system) later on).
Background technology
As the AFS of motion for the walking safety that improves automobile, its technology is opened among the 2002-160581 the spy by the applicant's motion and is disclosed.This AFS detects the information of expression automobile CAR walk and electronic control unit is exported in its detection with sensor 1 and (claim ECU (Electronic Control Unit) 2 later on shown in the concept map of Fig. 1.Be provided with as this sensor 1: rotation direction sensor 1A, the steering angle of its test example such as automobile CAR wheel flutter SW; Car speed sensor 1B, the speed of a motor vehicle of detection automobile CAR; Overall height sensor 1C (only illustrating the sensor of rear portion axletree), axletree height separately before and after it detects for the horizontality (level) that detects automobile CAR, these sensors 1A, 1B, 1C are connected on the described ECU2.Described ECU2 is according to each input of the sensor 1 of input, and control is equipped in steering indicating light 3R, the 3L about automotive front respectively, i.e. the head lamp 3 that control can change its light distribution characteristic makes direction of illumination left and right directions ground deflection.As this steering indicating light 3R, 3L is the structure that the light deflector that is arranged in the head lamp and projection lamp horizontal direction are rotated, possess driven in rotation device, be called power element in this mechanism that comprises this driven in rotation device by drive force source driven in rotation such as drive motor.The speed of travel corresponding to this automobile when walking on curv road according to this AFS, automobile can be turning fwd road illumination an actv. improving in the walking safety.
Among this AFS in order to realize that appropriate illumination need be correctly corresponding the angle of deviation of the steering angle of wheel flutter and steering indicating light; can not obtain this optical axis to seasonable then steering indicating light to the direction of travel of automobile not on desirable direction; for example automobile directly can not be the place ahead illumination of advancing to walking and when turning, or the problem of the generation walking safety of the dizzy puzzled subtend car of deflection subtend fare etc.
Therefore present AFS when the ignition lock of automobile is connected steering indicating light to the reference angle position of stipulating, normally the craspedodrome direction of automobile is carried out initialization.Carry out this initialization and can obtain the corresponding of wheel flutter SW and steering indicating light angle of deviation, later on this initialization the reference angle position be that the deflection that benchmark just can carry out suitable steering indicating light is moved.But, be provided with the angle of deviation detector in therefore present this kind power element and be used to detect the angle of deviation that the power element rotating output shaft of corresponding relation is arranged with the angle of deviation of steering indicating light for the steering indicating light initialization is just needed to detect the present angle of deviation of steering indicating light.For example potentiometer is provided on the output shaft of the driven in rotation device that drives the steering indicating light rotation, the angle of rotation that detects output shaft from this potentiometric output is an angle of deviation.
But complicated, the essential factor that maximizes that this potentiometer becomes causes activator structure are set, so undesirable.Therefore the angle of rotation of considering to detect the drive source drive motor of power element driven in rotation device detects the angle of deviation of steering indicating light, is used as rotating angle detector, the Hall element and the Hall IC (back claims Hall element) of counting output pulse signal according to the rotation amount of drive motor for this reason.Promptly by adding up (counting), detect the angle of deviation of power element indirectly, from the impulse singla of Hall element output with the suitable control of realization AFS along with the spinning movement of drive motor.
Be used to carry out the initialization of steering indicating light now from the impulse singla of this Hall element.For example steering indicating light is turned to the position that the end is a maximum angle of deflection to a direction, impulse singla beginning to add up from Hall element when this turned position rotates steering indicating light round about stopped operating in the moment that counts on predefined impulse singla.If therefore try to achieve the correlation of the statistics and the steering indicating light angle of deviation of impulse singla in advance, then can make steering indicating light only rotate the angle of deviation of regulation from extreme position according to the statistics of impulse singla, can be set in steering indicating light the reference angle position of regulation, be the craspedodrome direction at this.
The present inventor to the automobile that possesses horizontal mechanism, promptly possess the overall height that detects vehicle front and trailing wheel and detect the inclination of automobile vertical direction, the corresponding automobile of adjusting the horizontal mechanism of the head lamp above-below direction angle of deviation situation that is suitable for this AFS is discussed with it, and the setting carried out of the reference angle position of direction up and down direction time the to the left and right when at this moment described steering indicating light initialization also has been discussed.For example carry out during the steering indicating light initialization left and right directions reference angle set positions make the power element action time make the horizontal mechanism action, want like this being set on the reference angle position with reaching above-below direction about steering indicating light.Reference angle position at this above-below direction is selected horizontal direction usually.
Summary of the invention
But when like this setting of left and right directions and above-below direction reference angle position being carried out simultaneously; sometimes when setting steering indicating light left and right directions reference angle position irradiation optical axis towards subtend car one side; at this moment with horizontal mechanism the irradiation optical axis of steering indicating light above-below direction towards horizontal direction and even than its when top, possible dizzy puzzled subtend car.Therefore require under the state that prevents dizzy puzzled subtend car, to carry out during the steering indicating light initialization.
The object of the present invention is to provide a kind of vehicle headlamp apparatus and optical axis position establishing method thereof, when preventing the AFS initialization action to the dizzy suitable control of deluding, guarantee AFS of subtend car.
Vehicle headlamp apparatus of the present invention, it possesses: left and right sides deviator, its according to the steering angle of vehicle the irradiation optical axis of head lamp direction deflection to the left and right; Deviator up and down, the irradiation optical axis of its head lamp is the direction deflection up and down, it is characterized in that, it comprises: the deflection control setup, it is when the state of the irradiation optical axis of utilizing deviator up and down to make head lamp below horizontal direction, and the optical axis position that utilizes left and right sides deviator to carry out head lamp is set action.
Optical axis position establishing method of the present invention be possess according to the steering angle of vehicle the irradiation optical axis of head lamp to the left and right the direction deflection left and right sides deviator and the irradiation optical axis of head lamp up and down in the vehicle headlamp apparatus of the direction deviator up and down of being partial to, it is characterized in that, comprise, when the optical axis position of head lamp is set in the reference angle position, be when the state of the irradiation optical axis of utilizing deviator up and down to make head lamp below horizontal direction, utilize left and right sides deviator to carry out optical axis position setting action, the optical axis position of this left and right sides deviator is set the optical axis position setting action of deviator is up and down finished.For example up and down the action of deviator begins the back after through first specified time, begins the action of left and right sides deviator again.Make that up and down deviator is after the deflection action beginning of below, after through second specified time, making up and down again, deviator begins the deflection action towards the top.
Utilizing before left and right sides deviator is set in the reference angle position to the optical axis position of head lamp according to the present invention, utilizing up and down, deviator makes the optical axis position of head lamp towards the horizontal direction below, after utilizing left and right sides deviator to be set in the optical axis position of head lamp on the reference angle position, again this optical axis position is set on the reference position of regulation.Can prevent optical axis position head lamp deflection subtend car one side when horizontal direction and even top like this, prevent to set dizzy puzzled subtend car in the action, can guarantee the suitable control of AFS at optical axis position.
Description of drawings
Fig. 1 is the figure of expression AFS concept structure;
Fig. 2 is the longitudinal diagram of steering indicating light;
Fig. 3 is the exploded perspective view of the main portion of steering indicating light inner structure;
Fig. 4 is the exploded block diagram of power element;
Fig. 5 is the plane structure chart of power element;
Fig. 6 is the longitudinal diagram of power element;
Fig. 7 is the local amplification stereogram of brushless motor;
Fig. 8 is the square circuit diagram of expression AFS circuit structure;
Fig. 9 is the circuit diagram of expression power element circuit structure;
Figure 10 places ignition lock to carry out the initialized diagram of circuit of projection lamp when connecting;
Figure 11 is the rotational action of expression projection lamp and synchronous figure thereof;
Figure 12 is the mode chart that amount of deflection offsets in each initialization action of the two ends way of contact of expression projection lamp and the single-ended way of contact;
The specific embodiment
Embodiments of the invention are described with reference to the accompanying drawings.Fig. 2 is that utilization can make the inner structure longitudinal diagram of the head lamp of the steering indicating light formation of being partial to about direction of illumination in the AFS structural element as lamp deflection angle controller of the present invention shown in Figure 1, and Fig. 3 is the exploded block diagram of its main portion.Lens 12 are in the open front of light fitting body 11, and bonnet 13 is installed in rear aperture, has formed lamp house 14, is equipped with projection lamp 30 in this lamp house 14.Because described projection lamp 30 is 304 integrated body shell 301, catadioptre 302, lens 303 and light source, be widely used, thus in this detailed, but as used herein light source 304 uses be discharge bulb.Described projection lamp 30 is become carriage 31 supportings of コ word shape substantially.Be equipped with sponson 15 around the projection lamp 30 in the described light fitting body 11 so that not scioptics 12 expose inside.This embodiment utilization is installed in dress in the lower cover 16 of described light fitting body 11 bottom surface openings and is used for lamp circuit 17 that the discharge bulb of projection lamp is lighted.
Described projection lamp 30 with the state support that is clipped in therebetween by lower plate 312 and upper plate 313, between this lower plate 312 and the upper plate 313 in the formation that meets at right angles of diaphragm plate 311 general curved from described carriage 31.Power element 4 usefulness screws 314 described later be fixed on described lower plate 312 below, above the axis hole 315 of the rotating output shaft 448 of this power element 4 by lower plate 312 upper sheds is projected into.Screw 314 is tightened on the lower plate 312 following outstanding juts 318.Then, the axial region 305 that described projection lamp 30 is provided with above is entrenched on the axle bed 316 that is provided with on the upper plate 313, connecting portion that projection lamp 30 is provided with below 306 is chimeric to be connected on the rotating output shaft 448 of described power element 4, like this projection lamp 30 can to carriage 31 left and right directions ground rotate and as described later the action by power element 4 and rotating output shaft 448 one horizontal directions the action that rotates.
Said carriage 31 is from the front, each top about head lamp school light nut 321,322 is installed in integratedly, and horizontal bearing 323 is installed in lower right side integratedly.Screwing horizontal head lamp school light screw 331 and vertical head lamp school light screw 332 on described each head lamp school light nut 321,322 respectively, but this horizontal head lamp school light screw 331 is supported by light fitting body 11 with vertical head lamp school light screw 332 rotating shafts ground.The chimeric horizontal ball 51 that the horizontal mechanism 5 of supporting light fitting body 11 is arranged on the described horizontal bearing 323.By rotating shaft operant level head lamp school light screw 331, carriage 31 is that fulcrum can rotate in the horizontal direction with the line of head lamp school, right side light nut 322 and horizontal axle bed 323 with this structure.By while rotating shaft operant level head lamp school light screw 331 with vertical head lamp school light screw 332, can be carriage 31 that fulcrum rotates on above-below direction with horizontal axle bed 323.By horizontal mechanism 5 action, horizontal ball 51 are axially moved forward and backward, can make carriage 31 with about the line of each head lamp school light nut 321,322 be that the fulcrum above-below direction rotates.So just can carry out the head lamp school light adjustment of adjusting for direction and above-below direction to the left and right to the optical axis of projection lamp 30 and carry out the horizontal adjustment that the corresponding horizontality that changes along with the automobile overall height is adjusted the optical axis above-below direction of projection lamp.Having below the catadioptre 302 of projection lamp 30 has punching press to erect a pair of block 317 of formation respectively in position, the left and right sides on the lower plate 312 of outstanding projection 307 and carriage on the other side 31, along with the rotation of projection lamp 30 contacts the slewing area that limits this projection lamp 30 by projection 307 with block 317 collisions of either side.
Fig. 4 is that the described power element 4 that makes described steering indicating light 3R, 3L do spinning movement is wanted the exploded perspective view of portion, and Fig. 5 is the plane structure chart of its assembled state, and Fig. 6 is a longitudinal diagram.Housing 41 is by being respectively that approximate second 41D of pentagonal plate-like and first 41U constitute, and a plurality of projections 410 of outstanding setting on the side face of second 41D are chimeric mutually with a plurality of tabling pieces 411 that the side face from first 41U hangs down downwards, form shell chamber in inside.The two sides of described first 41U and second 41D are given prominence to both sides respectively and are formed with supporting slice 412,413, are used to utilize it as described housing 41 usefulness screws 314 to be fixed on the jut 318 of carriage 31.Give prominence on described housing 41, combine by the rotating output shaft 448 that castellated shaft constitutes with the bottom surface connecting portion 306 of described projection lamp 30.The back side of described housing 41 is equipped with line connector 451, and is chimeric with the external cabling device 21 (with reference to Fig. 2) that is connected on the described ECU2.
Erect respectively on the assigned position of the inner bottom surface of second 41D of described housing 41 and be provided with the brushless motor described later 42 that is equipped with in 414,415,416,417, the first hollow bumps portions 414 of 4 hollow bumps portions as drive motor.Insert each that is supporting gear mechanism 44 in second to the 4th hollow bumps portion 415,416,417 as described later.Inner bottom surface periphery along described second 41D is formed with step-like rib muscle 418, printed base plate 45 its peripheries are placed on this step-like rib muscle 418 with state of contact, and are clamped in rib muscle downwards that not expression is set on first 41U among the figure and the state built-in hold between the described step-like rib muscle 418 holds in housing 41.This printed base plate 45 is connected by the described first hollow bumps portion 414, and the brushless motor 42 that is assembled in simultaneously on this printed base plate 45 is electrically connected, and various electronic units and the described line connector of not representing as among the figure of aftermentioned control circuit 43 451 is installed.
Shown in the local fracture block diagram of Fig. 7, described brushless motor 42 supports so that S. A. 423 is rotatable by thrust baring 421 and sleeve bearing 422 in the first hollow bumps portion 414 of described second 41D.And the stator coil 424 that contains 3 pairs of coils of branch such as circumferencial direction configuration is fixedly supported upon in the first hollow bumps portion 414, and this stator coil 424 is connected electrically on the described printed base plate 45 and is given.Be assembled into one at this stator coil 424 and seat 425 unshakable in one's determination, take to utilize the terminal 425a that is arranged on this iron core seat 425 that described printed base plate 43 is constituted the structure that is electrically connected.Therefore fixedly mounting the rotor 426 of cylindrical vessel shape to cover described stator coil 424 in the upper end of described S. A. 423.Described rotor 426 comprises: yoke body 427 is cylindrical vessel shapes of resin forming; Rotor magnet 428, be circular, be installed on the inner peripheral surface of this yoke body 427, the S utmost point, the N utmost point alternately magnetize in a circumferential direction.
The brushless motor 42 of this structure drives described rotor 426 and S. A. 423 rotations like this by three coils of described stator coil 424 being supplied with position mutually different U, V, W alternating current, making and the magnetic force direction of 428 of described rotor magnets changes.As shown in Figure 7, that the circumferencial direction as prescribed of the described rotor 426 in described printed base plate 45 upper edges is spaced is a plurality of, be that 3 Hall element H1, H2, H3 are configured supporting at this, the magnetic field of each Hall element H1, H2, H3 changed when rotor magnet 428 rotated with described rotor 426, the connection off-state that becomes each Hall element H1, H2, H3 changes, and output is corresponding to the impulse singla of rotor 426 swing circles.
First gear 441 is the one resin forming on the framework 427 of described rotor 426, and this first gear 441 constitutes the part of gear mechanism 44, becomes the structure that described rotating output shaft 448 deceleration rotations are driven.It is that described gear mechanism 44 comprises: described first gear 441; Second gear 443 is bearing in by rotatable on first anchor shaft 442 of the described second hollow bumps portion 415 supportings; The 3rd gear 445 is bearing in by rotatable on second anchor shaft 444 of described the 3rd hollow bumps portion 416 supportings; Quadrant gear 447 is bearing in by rotatable on the 3rd anchor shaft 446 of described the 4th hollow bumps portion 417 supporting and form one with described rotating output shaft 448, is respectively with resin forming.As shown in Figure 5 and Figure 6, described second gear 443 is axially integrated the second large diameter gear 443a and the second small-diameter gear 443b, the second large diameter gear 443a and 441 engagements of described first gear.Described the 3rd gear 445 is axially integrated the third-largest footpath gear 445a and the 3rd small-diameter gear 445b, the third-largest footpath gear 445a and described second small-diameter gear 443b engagement.The 3rd small-diameter gear 445b and 447 engagements of described quadrant gear.Be decelerated by second gear 443, the 3rd gear 445 and quadrant gear 447 with the rotational force of first gear 441 of rotor 427 one of brushless motor 42 rotation like this and be delivered to rotating output shaft 448.The outstanding block 419 that is formed with contacts with each end collision of this quadrant gear 447 respectively on the inner face of described second 41D in both sides of described quadrant gear 447 hand of rotation, by the full rotation angular range of the described quadrant gear 447 of these block 419 restrictions, in other words limit the full rotation angular range of rotating output shaft 448.The full rotation angular range of this quadrant gear 447 designs greatlyyer a little than the full rotation angular range of the projection lamp 30 that limits with projection 307 and block 317.
Fig. 8 is the square circuit diagram that expression comprises the illumination equipment electric circuit structure of described ECU2 and power element 4.Power element 4 is equipped on steering indicating light 3R, the 3L of vehicle right and left, and can two way communication between ECU2.Possess in the described ECU2: host CPU 201, it is handled with the algorithm of regulation according to the information from described sensor 1, the control signal C0 of output regulation; Interface (being called I/F later on) circuit 202, it is used for output input between this host CPU 201 and described power element 4.The connection cut-off signal of the lighting switch S1 that is provided with on the automobile can be input in the described ECU2, according to the connection of this lighting switch S1, disconnection, be connected on the outer vehicle power of figure by control signal N, the lamp circuit 7 that discharge bulb 304 electric power of projection lamp 30 are used is supplied with in control, can switch the bright lamp of described two steering indicating light 3R, 3L and turns off the light.ECU2 by horizontal signal DK controlling level control circuit 6, be used to control the horizontal mechanism 5 of the optical axis above-below direction adjustment usefulness of the carriage 31 of supporting projection lamp 30, carry out the optical axis adjustment of the projection lamp 30 that changes along with the automobile overall height.Certainly the ignition lock S2 that electric system connected, disconnect usefulness of these circuit by being provided with on the automobile, and be to connect or open circuited with the coupled condition of power supply.
Be contained in the control circuit 43 that constitutes on the printed base plate 45 in the described power element 4 in being provided with respectively on vehicle right and left each steering indicating light 3R, 3L, it possesses: I/F circuit 432 is used to export the signal between input and the described ECU2; Aiding CPU 431 is according to handling with the algorithm of regulation from the signal of described I/F circuit 432 inputs and the impulse singla P that exports from described Hall element H1, H2, H3; Motor-drive circuit 434 is used to rotate the described brushless motor 42 of driving as rotating driving device.Be partial to angle signal DS and be input to described power element 4 from about described ECU2 output steering indicating light 3R, 3L in this part as described control signal C0.
Fig. 9 is the motor-drive circuit 434 of described control circuit 43 and the circuit diagram of brushless motor 42 modal representations in the described power element 4.Described motor-drive circuit 434 possesses: switch matrix 435, as from the control signal speed control signal V of described control circuit 43 aiding CPUs 431, beginning danger signal S, just change reverse signal R and import respectively, and input is from the impulse singla of described three Hall element H1, H2, H3; Output circuit 436 is accepted the output of this switch matrix 435, adjusts the position phase of the three-phase power (U phase, V phase, W phase) that 3 pairs of coils of stator coil 424 are supplied with in described brushless motor 42.This motor-drive circuit 434 makes Magnmet rotor 428 rotations by each electric power that stator coil 424 is supplied with U phase, V phase, W phase, and the framework 427 of one is rotor 426 and S. A. 423 rotations with it.Each Hall element H1, H2, H3 detect variation, the output pulse signal P in magnetic field when Magnmet rotor 428 rotations, this impulse singla P is to switch matrix 435 inputs, switch matrix 435 is adjusted impulse singlas synchronously, carry out switch motion with output circuit 436, makes rotor 426 continue to rotate like this.
Described switch matrix 435 according to from speed control signal V, the beginning danger signal S of aiding CPU 431, just change reverse signal R the control signal C1 of regulation to output circuit 436 outputs, output circuit 436 is accepted this control signal C1 and is adjusted the position phase of the three-phase power of supplying with to stator coil 424, control the beginning of brushless motor 42 spinning movements and stop, hand of rotation, rotative speed.Aiding CPU 431 is imported respectively from each part of the impulse singla P of described each Hall element H1, H2, H3 output, understands the slew mode of brushless motor 42.Keep up-down counter 437 in this aiding CPU 431, corresponding this statistical value by statistics with the position of rotation of brushless motor 42 from the impulse singla of Hall element H1, H2, H3.
According to above structure, connecting igniting switch S 2 and connecting under the state of lighting switch S1, the sensor 1 that sets from automobile is imported the speed of the steering angle of the wheel flutter SW of this automobile, automobile, the information such as overall height of automobile to ECU2 as shown in Figure 1, ECU2 performs calculations with host CPU 201 according to the sensor output of input, calculate flasher 3R, 3L projection lamp 30 about deflection angle signal DS, to each power element 4 input of two steering indicating light 3R, 3L.Power element 4 according to input about deflection angle signal DS perform calculations with aiding CPU 431, calculate with this about the cooresponding signal of deflection angle signal DS, to motor-drive circuit 434 outputs, drive brushless motor 42 and rotate.The rotary driving force of brushless motor 42 slows down by gear mechanism 44 and transmits to rotating output shaft 448, is connected therefore that projection lamp 30 on the rotating output shaft 448 rotates in the horizontal direction, the optical axis direction of steering indicating light 3R, 3L is partial to the left and right.Detect the angle of deviation of projection lamp 30 during these projection lamp 30 rotational action from the angle of rotation of brushless motor 42.Promptly as shown in Figure 8, carrying out aiding CPU 431 according to the impulse singla P (P1, P2, P3) of three Hall element H1, H2 on being located at brushless motor 42, H3 output at least one detects.Aiding CPU 431 compares detected angle of deviation detection signal with deflection angle signal DS from about the ECU2 input, the anglec of rotation of controlled reset brushless motor 42 makes both unanimities, can the optical axis direction of projection lamp 30 be steering indicating light 3R, 3L optical axis direction by about deflection angle signal DS be controlled at accurately on the deflection position of setting.
The light that deflection action by this projection lamp 30, the quilt that two steering indicating light 3R, 3L penetrate are partial to is from the craspedodrome steering handle of the automobile area illumination of direction deflection to the left and right, safe driving can be improved in can also throw light on the place ahead of steering direction of the craspedodrome direction of automobile of not only throwing light in the walking of automobile.
Carrying out initialization process when this ignition lock S2 connects, is the optical axis of steering indicating light 3R, 3L on the reference angle position in the angle of deviation position that above-below direction and left and right directions are set in regulation respectively.It is that horizontal direction and left and right directions are that inboard about 5.5 ° of the craspedodrome direction, the about 20.5 ° angular range in the outside are partial to action that steering indicating light 3R, 3L about among this embodiment is designed to respectively from above-below direction.Figure 10 is the diagram of circuit that the described initialization action flow process of explanation is used.Figure 11 (a) and (b) are about the expression projection lamp, about the mode chart of each rotational action and sequential chart separately.(S101) when ignition lock S2 is connected, at first aiding CPU 431 usefulness level control devices 6 drive horizontal mechanisms 5, begin the initializing set of the above-below direction of this horizontal mechanism 5.Promptly driving horizontal mechanism 5 makes carriage 31 to horizontal direction below inclination (S102).The optical axis of projection lamp 30 is partial to the below direction like this.At this moment when projection lamp 30 is above maximum with first specified time, be that the optical axis of 0.85 second projection lamp 30 is just towards horizontal direction, then towards the below of horizontal direction at this.Therefore projection lamp 30 is when being positioned at than little angle of deviation position, the angle of deviation position above the maximum, the optical axis of projection lamp 30 use than short time of described first specified time towards horizontal direction.Optical axis is towards the below of horizontal direction then.Certainly former state ground maintenance state down then when being exactly at first the below towards horizontal direction.
The optical axis of process specific time, projection lamp just becomes the state (S103) towards the horizontal direction below like this, aiding CPU 431 by motor-drive circuit 434 brushless motor 42 to a direction driven in rotation, projection lamp 30 from the interior side direction rotation (S104) of direction to the left and right of present optical axis position.In the explanation afterwards just be decided to be with the clockwise direction of figure, anticlockwise direction is decided to be negative.When the rotation of projection lamp 30 stops, promptly be located at projection 307 on the projection lamp 30 when running into the block 317, the projection lamp 30 that are located at a side on the carriage 31 and being partial to a side maximum angle of deflection position θ 1 (to-5.5 ° approximately in craspedodrome direction), detect statistical value X1 (S105) at this moment.Then, this is brushless motor 42 driven in rotation round about, and projection lamp 30 is rotated (S106) to the lateral direction than the left and right directions of craspedodrome direction.When its rotation stops, when promptly projection 307 block 317, the projection lamp 30 of running into an opposite side is partial to the position that is equivalent to an opposite side maximum angle of deflection position θ 2 (to+20.5 ° approximately in craspedodrome direction), detect statistical value X2 (S107) at this moment.Brushless motor 42 in the above flow process carries out with more high-revolving specified speed to a direction and spinning movement round about.
Then, ask the middle position neutral angle position θ c of the maximum angle of deflection position θ 2 of the maximum angle of deflection position θ 1 of an example and an opposite side.Promptly
θc＝(θ2+θ1)÷2
In fact the calculating of this neutral angle position θ c is to use impulse singla statistical value X1 and the impulse singla statistical value X2 the during end perform calculations (S108) in the opposite direction when the interior side direction end.The statistical value Xc that is neutral angle position θ c becomes
Xc＝(X2+X1)÷2
Being benchmark with this neutral angle position θ c then, is benchmark angular position o with the angle position of direction to the inside of the angle θ z of regulation only from this benchmark, the angle position of the direction of promptly keeping straight on.Promptly
θo＝θc-θz
Actual calculation is to deduct the statistical value Xo (S109) that comes position, centering angle corresponding to the statistical value Xz of predetermined angular θ z from the described statistical value Xc of calculation.Be that reference angle position Xo becomes
Xo＝Xc-Xz
Then from the outside extreme position of step S107 once more brushless motor 42 to a direction driven in rotation, projection lamp 30 to the inside direction begin to rotate (S110).At this moment the rotative speed of brushless motor 42 was decided to be than former high speed.Continue the statistical value Xo of rotation, stop the rotation (S111) of brushless motor 42 in the moment that reaches this statistical value Xo up to the reference angle position θ o that step S109 tries to achieve.So just can be set in reference angle position θ o to the optical axis of projection lamp 30, the direction of promptly keeping straight on can be carried out initializing set to the optical axis of projection lamp 30.
At this shown in Figure 12 (a), side extreme position maximum angle of deflection position θ 1 when direction is rotated to the inside from starting position S, waiting the stress of each one to produce distortion or vary with temperature generation by each material coefficient of thermal expansion rate by power element 4 and projection lamp 30 is out of shape, has produced amount of deflection angle θ x1 by these.The maximum angle of deflection position θ 2 of the opposite side extreme position when similarly the subtend lateral direction is rotated has also produced amount of deflection angle θ x2.Therefore become θ 1 ', θ 2 ' in fact respectively by these amount of deflection angles both maximum angle of deflection position θ 1, θ 2.
θ1′＝θ1-θx1
θ2′＝θ2+θx2
Neutral angle position θ c is then as follows when therefore using these θ 1, θ 2 to carry out the calculation of Xc at step S108
θc＝(θ2′+θ1′)÷2
＝[(θ2+θx2)+(θ1-θx1)÷2
＝[(θ2+θ1)+(θx2-θx1)]÷2
＝(θ2+θ1)÷2+(θx2-θx1)÷2
＝θc+(θx2-θx1)÷2
Therefore the value of (θ x2-θ x1) ÷ 2 is an error.
1/2 of the difference of the amount of deflection angle θ x1 of the amount of deflection angle θ x2 of lateral direction and interior side direction produced like this as error, so very little of the setting error of mean squares of the setting of neutral angle position θ c and then reference angle position θ o.The amount of deflection angle θ x2 of the amount of deflection angle θ x1 of side direction and lateral direction is relevant with the projection lamp with same power element respectively in particularly should example, and rotative speed of brushless motor 42 is fixed in the middle of this, so separately amount of deflection angle θ x1, θ x2 are about equally.Therefore know that the error that is at this moment produced by amount of deflection angle θ x1, θ x2 roughly is 0, can obtain very high precision with the setting of reference angle position θ o.
During carrying out the 30 left and right directions optical axis initialization of above projection lamp, aiding CPU 431 remains on the optical axis of projection lamp 30 by horizontal mechanism 5 state of maximum below angle of deviation.Then at specific time, promptly second specified time that finishes than the reference angle set positions of described left and right directions only before any moment, this by horizontal mechanism 5 beginning the optical axis direction of projection lamp 30 below behind after the deflection 1.9 seconds (S112), aiding CPU 431 rotates projection lamp 30, makes optical axis towards horizontal direction (S113) by horizontal control mechanism 6 controlling level mechanisms 5 upward.Therefore optical axis towards horizontal direction the time be projection lamp 30 optical axis the dizzy puzzled subtend car of left and right directions towards the craspedodrome direction, so even also can dizzy puzzled subtend car when optical axis sets horizontal direction.
The projection lamp also can carry out the initialization of the single-ended way of contact when carrying out the reference angle set positions of left and right directions.The initialization of this single-ended way of contact shown in the concept map of Figure 12 (b), steering indicating light projection lamp 30 from the original position S at this turn to the end of a direction, at the position θ r of the maximum angle of deflection of this right.Then projection lamp 30 is rotated round about from this extreme position θ r, begin to add up impulse singla simultaneously, stop operating in the moment that counts on predefined impulse singla from Hall element.Therefore need only the correlation of trying to achieve in advance to the statistics of projection lamp 30 angle of deviation impulse singlas, just can only rotate the angle of deviation θ z of regulation to projection lamp 30 from extreme position θ r, can be set in the reference position of regulation to projection lamp 30, be on the craspedodrome direction at this according to the statistics of impulse singla.
But the initialization of this single-ended way of contact is when setting the position of projection lamp to a direction end to be begun the position, angle as setting, set starting position statistics impulse singla according to this, setting is as the reference angle position of craspedodrome direction, so that the extreme position during projection lamp to the direction end becomes θ r ', only the rotational angle θ x that produces amount of deflection according to each one of projection lamp and power element then drive motor unnecessary rotation is arranged, only this unnecessary rotation just might begin produce error on the position, angle setting.And when considering the spring rate of steering indicating light and materials such as employed resin of power element and metal and coefficient of thermal expansion etc., these values change with variation of temperature, so the amount of flexibility when being at the end also changes, might produce some errors setting on the beginning position, angle with variation of temperature.
As above when setting the optical axis position of left and right directions, although way of contact temperature traverse in two ends also can obtain high setting accuracy, action is simply set in the single-ended way of contact and the way of contact of described two ends specific energy mutually, so also can adopt this single-ended way of contact when not requiring the vehicle headlamp apparatus that the high precision optical axis position is set.
Described embodiment is that the reference angle set positions action beginning back of above-below direction begins the reference angle set positions action of left and right directions after through first specified time again, but aiding CPU 431 are inputs from the information of the projection lamp 30 above-below direction angle of deviation of horizontal mechanism 5, can understand in real time structure the time, also can be according to the information of this angle of deviation in the time of optical axis below horizontal direction of projection lamp 30, the reference angle set positions action of beginning left and right directions.Similarly, when aiding CPU 431 can be understood the left and right directions angle of deviation of projection lamp 30 optical axises in real time according to impulse singla, the finish time of also measurable calculation left and right directions reference angle set positions action, result in beginning upward the rotational action of the optical axis of projection lamp 30 towards horizontal direction according to this prediction.
At this, the left and right directions deflection scope of steering indicating light is the deflection angle initialization of direction must be less than deflection angle laterally to the inside to the craspedodrome direction of automobile among the described embodiment, so laterally rotate again after the projection lamp turns to the inside, but under the situation of the front lamp device that the deflection angle in inboard and the outside equates, promptly the reference position is set under the situation of head lamp at angle of deviation center in inboard and the outside, the order of rotation direction also can be arbitrarily.
The impulse singla of up-down counter 437 statistics of described aiding CPU 431 to any one Hall element H1, H2, impulse singla P1, the P2 of H3, P3 adds up can.Statistics again after the pulse signal cycle from Hall element also can carry out the pulse signal frequency division etc. very in short-term.
Among the described embodiment to be applicable to the projection lamp that constitutes steering indicating light to the left and right the direction deflection, the example of the head lamp that irradiation optical axis changes is represented, but the present invention is also applicable to the structure that only makes the action of light deflector deflection or by making the fill-in reflector that independently is provided with main light deflector be partial to the head lamp that moves, changes range of exposures in fact.
As mentioned above, the present invention possesses: in the irradiation optical axis that makes head lamp by deviator up and down below horizontal direction during state, utilize left and right sides deviator to carry out the deflection control setup of headlight optical axis set positions action, the optical axis position of head lamp during to the reference angle set positions, making the irradiation optical axis of head lamp by deviator up and down is when the state of the below of horizontal direction, utilize left and right sides deviator to carry out the action of headlight optical axis set positions, after the optical axis position setting action of this left and right sides deviator is finished, the optical axis position setting action of deviator is up and down finished, so utilizing before left and right sides deviator is set in the optical axis position of head lamp on the reference angle position, make the below of the optical axis position of head lamp by deviator up and down, utilizing left and right sides deviator to become after being set in the optical axis position of head lamp on the reference angle position on the reference position that this optical axis position is set at regulation towards horizontal direction.Optical axis position head lamp deflection subtend car when horizontal direction and even top can be prevented like this, the suitable control of setting dizzy puzzled subtend car in the action at optical axis position, guaranteeing AFS can be prevented.
Claims (4)
1, a kind of vehicle headlamp apparatus possesses: left and right sides deviator, its according to the steering angle of vehicle the irradiation optical axis of head lamp direction deflection to the left and right; Deviator up and down, the irradiation optical axis of its described head lamp is the direction deflection up and down, it is characterized in that, comprise: the deflection control setup, during at the state below horizontal direction, the optical axis that utilizes described left and right sides deviator to carry out described head lamp is set action in the irradiation optical axis of utilizing described up and down deviator to make described head lamp for it.
2, a kind of optical axis position establishing method of vehicle headlamp apparatus, described vehicle headlamp apparatus comprises: left and right sides deviator, its according to the steering angle of vehicle the irradiation optical axis of head lamp direction deflection to the left and right; Deviator up and down, the irradiation optical axis of its described head lamp is the direction deflection up and down, the optical axis position establishing method of described vehicle headlamp apparatus is characterised in that, comprise, when the optical axis position of described head lamp is set in the reference angle position, in the irradiation optical axis of utilizing described up and down deviator to make described head lamp during at state below horizontal direction, utilize described left and right sides deviator to carry out optical axis and set action, after utilizing described left and right sides deviator that optical axis setting action is finished, utilize described deviator up and down to make optical axis set action again and finish.
3, the optical axis position establishing method of vehicle headlamp apparatus as claimed in claim 2 is characterized in that, after the action of described up and down deviator begins, after through first specified time, the action of described left and right sides deviator is begun.
4, as the optical axis position establishing method of claim 2 or 3 described vehicle headlamp apparatus, it is characterized in that, after the deflection action beginning downwards of described deviator up and down, after through second specified time, described deviator up and down towards the top, is made deflection action beginning.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP274620/2002 | 2002-09-20 | ||
| JP274620/02 | 2002-09-20 | ||
| JP2002274620A JP4130345B2 (en) | 2002-09-20 | 2002-09-20 | Vehicle headlamp device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1490196A true CN1490196A (en) | 2004-04-21 |
| CN100415567C CN100415567C (en) | 2008-09-03 |
Family
ID=29244347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031584926A Expired - Fee Related CN100415567C (en) | 2002-09-20 | 2003-09-11 | Headlight devices for vehicles and optic axis position setting method |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7036964B2 (en) |
| JP (1) | JP4130345B2 (en) |
| KR (1) | KR100530947B1 (en) |
| CN (1) | CN100415567C (en) |
| DE (1) | DE10343510B4 (en) |
| FR (1) | FR2845048B1 (en) |
| GB (1) | GB2394765B (en) |
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| CN101722890B (en) * | 2008-10-21 | 2012-05-09 | 汽车零部件研究及发展中心有限公司 | Head light and method for controlling deflection of illumination direction thereof |
| CN101648541B (en) * | 2008-08-11 | 2013-04-24 | 株式会社小糸制作所 | Automotive headlamp apparatus synthesizing light distribution patterns of right and left lamp units |
| CN104640742A (en) * | 2012-09-07 | 2015-05-20 | 株式会社电装 | Headlight device for vehicle |
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2002
- 2002-09-20 JP JP2002274620A patent/JP4130345B2/en not_active Expired - Fee Related
-
2003
- 2003-09-05 US US10/656,508 patent/US7036964B2/en not_active Expired - Lifetime
- 2003-09-11 CN CNB031584926A patent/CN100415567C/en not_active Expired - Fee Related
- 2003-09-17 GB GB0321803A patent/GB2394765B/en not_active Expired - Fee Related
- 2003-09-18 KR KR10-2003-0064663A patent/KR100530947B1/en not_active IP Right Cessation
- 2003-09-19 FR FR0311022A patent/FR2845048B1/en not_active Expired - Fee Related
- 2003-09-19 DE DE10343510.7A patent/DE10343510B4/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100422632C (en) * | 2005-12-31 | 2008-10-01 | 黄湘益 | Device angle for regulating of vehicle light |
| CN101648541B (en) * | 2008-08-11 | 2013-04-24 | 株式会社小糸制作所 | Automotive headlamp apparatus synthesizing light distribution patterns of right and left lamp units |
| CN101722890B (en) * | 2008-10-21 | 2012-05-09 | 汽车零部件研究及发展中心有限公司 | Head light and method for controlling deflection of illumination direction thereof |
| CN104640742A (en) * | 2012-09-07 | 2015-05-20 | 株式会社电装 | Headlight device for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100415567C (en) | 2008-09-03 |
| US20040057243A1 (en) | 2004-03-25 |
| FR2845048A1 (en) | 2004-04-02 |
| KR100530947B1 (en) | 2005-11-25 |
| DE10343510B4 (en) | 2016-09-08 |
| FR2845048B1 (en) | 2011-06-03 |
| GB2394765B (en) | 2004-10-27 |
| KR20040025830A (en) | 2004-03-26 |
| GB0321803D0 (en) | 2003-10-15 |
| US7036964B2 (en) | 2006-05-02 |
| DE10343510A1 (en) | 2004-04-01 |
| GB2394765A (en) | 2004-05-05 |
| JP4130345B2 (en) | 2008-08-06 |
| JP2004106769A (en) | 2004-04-08 |
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